A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 5975-01-406-0411
NSN 6130-01-252-8823
NSN 5930-01-215-1168
NSN 5975-01-435-6457
NSN 5935-01-476-5089
NSN 5996-01-412-3038
NSN 5930-00-157-4559
NSN 5999-01-191-4476
NSN 5935-00-142-4620
NSN 6650-01-445-6492
NSN 5975-01-128-3023
NSN 6135-00-823-3034